Anode connector for cathode ray tube



Allg 16, 1966 R. A. ROSENBERG HAL 3,267,432

ANODE CNNECTOR FOR CTHODE RAY TUBE Filed March 27. .1964

United States Patent ANODE CONNECTOR FR CATHODE RAY TUBE Richard A. Rosenberg, Dumont, NJ., and .lames J. Coppola, Elmont, NX., assignors t0 Industrial Electronic Hardware Corp., New York, N.Y., a corporation of New Yorlr Filed Mar. 2'7, 1964, Ser. No. 355,198 6 Claims. (Cl. 339-223) This invention relates to anode connectors for cathode ray tubes, and more particularly for television picture tubes.

The general object of the present invention is to improve such anode connectors. A more particular object is to minimize sharp edges and corners, this being of advantage in reducing corona effect, and possible injury to the rubber cap in which the end of the connector is protectively housed. Still another object is to so design the anode connector as to facilitate assembly of the` parts thereof.

To accomplish the foregoing general objects, and other more specific objects which will hereinafter appear, our invention resides in the anode connector elements and their relation one to another, as are, hereinafter more particularly described in the following specification. The specification is accompanied 'by a drawing in which:

FIG. 1 is explanatory of how the anode connector is used;

FIG. 2 is a longitudinal section through the end of the anode connector applied to a tube;

FIG. 3 is a transverse section taken approximately on the line 3-3 `of FIG. 2, and drawn to enlarged scale;

FIG. 4 is a Perspective view showing the parts in disassembled relation;

FIG. 5 is a similar view showing the parts assembled; and

FIG. 6 is a section through a different conductor.

Referring to the drawing, and more particularly to FIG. l, the cathode ray tube or television picture tube 12 has an anode terminal, not visible in FIG. l, but over which the insulation cap 14 of an anode connector 16 has been applied. The other end of the anode connector leads to a high voltage power supply 18 Vforming part `of a television receiver chassis. The leads to the tube 12 other than the high voltage connection 16 are applied by means of a detachable tube base or connector 20.

Referring now to FIG. 4, the anode connector comprises a length of insulated high voltage wire 22 having a bared end 24 which is bent back along the insulation of the wire. The remote end of the wire is also bared as indicated at 26, the w-ire preferably lbeing a stranded wire, and the insulation being designed for high voltage. In typical receivers, the wire is designed to withstand a voltage of twenty-tive thousand; but for small portable receivers, a different wire may be employed to accept the voltage, say, ten thousand.

The anode connector further comprises a clip generally designated 30, this being bent up out of relatively stiff resilient wire, sometimes referred to an piano wire. The clip has a reversely bent base portion 32 and divergent legs 34 which extend generally transversely of the base portion 32 and which terminate in bent tips 36.

The assembly further includes a drawn sheet metal cup 40, this being cylindrical and having a closed end 42. The cup is much like a standard product used for eyelets, except that the closed end 42 is left intact instead of being removed, and there is no flange at the open end 44.

The bared end 24 of the wire is bent back along the insulation of the wire; the clip 30 is disposed with its base 32 lengthwise of the wire; and the cup 40 is used to enclose the bared end of the wire and the base; fol- Mice lowing which the cup is forcibly indented as shown at 46 in FIG. 5, to strongly secure the said parts on the W1re.

In preferred form the bared end 24 is turned under the insulation of the wire, as shown in FIGS. 3 and 4, and the base 32 of the clip is disposed beneath the wire with its sides 32 astride the reversely -bent end 24. The cup is indented at the top, that is, on the side of the cup remote from the clip. The relation of the parts then is as shown in FIG. 3, in which cup 40 is indented at 46, and the lower wall of the cup contacts the sides 32 of the clip as well as the reversely bent end 24 of the wire, thereby electrically connecting one to the other. By reference to FIG. 2, it will be seen that the indentation 46 is somewhat deeper at the open end of the cup, thereby anchoring the parts against removal from the4 wire.

The assembly of the parts is quick and easy because in practice the base of clip 30 is simply inserted in the cup 40, and the wire 22 with its reversely bent end 24 is slid 'into the cup over the base of the clip, the end 24 naturally and readily assuming a position between the sides 32 of the base. The amount of insertion of these parts is inherently limited by the fact that the part 40 is a closed cup. The assembly is then struck in a suitable die to form the indentation 46 which locks the parts together.

While not essential, the anode connector usually is provided with a rubber cap previously designated 14. This cap is made of a flexible rubber, preferably an artilicial rubber such as neoprene, and the cap has a top portion 50 which receives the cup 4), and a skirt 52 which surrounds the legs 34. The skirt 52 .yields against the glass wall 54 of the tube when the connector is applied to the terminal S6. The terminal may be conventional, it being a dished button-like metal member secured through the glass wall S4, so that its inner face 58 is exposed inside the tube and receives a conductive coating 60 to which the high anode. voltage is to be applied. The rim of terminal 56 is flanged inward at 62 to receive the outwardly bent tips 36 of the legs 34, the latter being squeezed together when inserted in the terminal 56, thereby anchoring the anode connector in position.

To assemble the sub-assembly of FIG. 5 with the rubber cap 14, the free end of the wire 22 is passed upwardly through skirt 52 and through the lateral passage 64 of the cap. It is then pulled lengthwise through the cap until the cup 46 reaches the top 50, at which time it is forced into a receptive recess at 66. The yieldable elastic nature of the cap affords this type of assembly.

The wire 22 may have two kinds of insulation, as shown in FIG. 6, there being a protective insulation skin 63 around an insulation body 70. FIGS. 2 and 3 show a single insulation in order to simplify the drawing.

It is believed that the construction and method of assembly of our improved anode connector, as well as the advantages thereof, will be apparent from the -foregoing detailed description. By using the closed cup 40 the presence of sharp edges and corners is minimized, and there is no tendency to tear the rubber cap 14. Assembly of the parts shown in FIG. 4 is facilitated because the clip may be inserted in the cup as far as it will go, and the wire then may be inserted in the cup. These parts fit snugly and remain safely on the Wire as it is put into a suitable die for indenting the top of the cup. The indentation locks the parts together mechanically, and the cup itself provides an electrical connection between the wire. and the clip. The same cup and clip may ybe used for insulated wires designed for different high voltages, and despite the fact that such Wires have different outside diameters.

It will be understood that while we have shown the anode connector in a preferred form, changes may be made without departing from the scope. of the invention, as sought to be defined in the following claims.

We claim:

1. An anode connector comprising a short length of insulated high voltage wire having a bared end, a drawn sheet metal cup, a clip bent up out of relatively stiff resilient wire, said clip having a reversely bent base portion and divergent legs extending generally transversely of the base portion and terminating in bent tips, said bared end being bent back along the insulation of the wire, said clip being disposed with its base length- Wise of the wire, said cup enclosing the bared end of the wire and the base, and being forcibly indented to strongly secure the said parts on the wire, said cup contacting the bared end and the clip and thereby electrically connecting one to the other, the legs of the clip projecting transversely of the wire at the open end of the cup.

2. An anode connector comprising a short length of insulated high voltage wire having a bared end, a drawn sheet metal cup, a clip bent up out of relatively stiff resilient wire, said clip having a reversely bent base portion and divergent legs extending generally transversely of the base portion and terminating in outwardly bent tips, said bared end being bent back along the insulation of the wire, said clip being disposed with its base lengthwise beneath the wire, said cup enclosing the bared end of the wire and the base, and being forcibly indented to strongly secure the said parts on the wire, said cup contacting the bared end and the clip and thereby electrically connecting one to the other, the legs of the clip projecting transversely of the Wire at the open end of the cup.

3. An anode connector comprising a short length of insulated high voltage wire having a bared end, a drawn sheet metal cup, a clip fbent up out of relatively stii resilient wire, said clip having a reversely bent base portion and divergent legs extending generally transversely of the base portion and terminating in outwardly bent tips, said lbared end being bent back along the insulation of the wire, said clip being disposed with its base lengthwise beneath the wire, said cup enclosing the bared end of the wire and the base, and being forcibly indented to strongly secure the said parts on the wire, said cup contacting the bared end and the clip and thereby electrically connecting one to the other, the legs of the clip projecting transversely of the wire at the open end of the cup, and a flexible insulation cap having a top and a skirt, said top enclosing said cup and said skirt surrounding said legs.

4. An anode connector comprising a short length of insulated h-igh voltage wire having a bared end, a drawn sheet metal cup, a clip bent up out of relatively stii resilient wire, said clip having a reversely bent base portion and divergent legs extending generally transversely of the base portion and terminating in outwardly lbent tips, said ybared end being bent back along the insulation of the Wire, said clip being disposed with its base lengthwise beneath the wire, said cup enclosing the bared end of the wire and the base, and being forcibly indented at the top to strongly secure the said parts on the wire and to electrically connect the bared end to the clip, the legs of the clip projecting transversely Iof the wire at the open end of the cup.

5. An anode connector comprising a short length of insulated high voltage wire having a bared end, a drawn sheet metal cup, a clip bent up out of relatively stiff resilient wire, said clip having a reversely bent base portion and divergent legs extending generally transversely of the base portion and terminating in outwardly bent tips, said bared end being bent down under the insulation of the wire, said clip being disposed with its base lengthwise beneath the wire, said cup enclosing the bared end of the wire and the base, and being forcibly indented at the top to strongly secure the said parts on the wire and to electrically connect the bared end to the clip, the legs of the clip projecting transversely of the wire at the open end of the cup.

6. An anode connector comprising a short length of insulated high voltage wire having a bared end, a drawn sheet metal cup, a clip bent up out of relatively stifIn resilient wire, said clip having a reversely bent base portion and divergent legs extending generally transversely of the base portion and terminating in outwardly bent tips, said bared end being bent down under the insulation of the Wire, said clip being disposed with its `base lengthwise beneath the wire, said cup enclosing the bared end of the wire and the base, and being forcibly indented at the top to strongly secure the said parts on the wire and to electrically connect the bared end to the clip, the legs of the clip projecting transversely of the wire at the open end of the cup, and a ilexible insulation cap having a top and a skirt, said top enclosing said cup and said sk-irt surrounding said legs.

References Cited by the Examiner UNITED STATES PATENTS 802,994 10/ 1905 Kliegel et al 339-223 2,704,837 3/ 1955 Wintriss 339-223 X 2,869,100 l/l959 Adams 229-223 X EDWARD C. ALLEN, Primary Examiner. P. A. CLIFFORD, Assistant Examiner. 

1. AN ANODE CONNECTOR COMPRISING A SHORT LENGTH OF INSULATED HIGH VOLTAGE WIRE HAVING A BARED END, A DRAWN SHEET METAL CUP, A CLIP BENT UP OUT OF RELATIVELY STIFF RESILIENT WIRE, SAID CLIP HAVING A REVERSELY BENT BASE PORTION AND DIVERGENT LEGS EXTENDING GENERALLY TRANSVERSELY OF THE BASE PORTION AND TERMINATING IN BENT TIPS, SAID BARED END BEING BENT BACK ALONG THE INSULATION OF THE WIRE, SAID CLIP BEING DISPOSED WITH ITS BASE LENGTHWISE OF THE WIRE, SAID CUP ENCLOSING THE BARED END OF THE WIRE AND THE BASE, AND BEING FORCIBLY INDENTED TO STRONGLY SECURE THE SAID PARTS ON THE WIRE, SAID CUP CONTACTING THE BARED END AND THE CLIP AND THEREBY ELECTRICALLY CONNECTING ONE TO THE OTHER, THE LEGS OF THE CLIP PROJECTING TRANSVERSELY OF THE WIRE AT THE OPEN END OF THE CUP. 